package ssl;

import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

 
public class MyX509TrustManager implements X509TrustManager
{
	/*
     * The default X509TrustManager returned by SunX509.  We'll delegate
     * decisions to it, and fall back to the logic in this class if the
     * default X509TrustManager doesn't trust it.
     */ 
    X509TrustManager sunJSSEX509TrustManager; 
    MyX509TrustManager() throws Exception { 
        // create a "default" JSSE X509TrustManager. 
        KeyStore ks = KeyStore.getInstance("JKS"); 
        ks.load(new FileInputStream("matrix"), 
            "chipsmatrix".toCharArray()); 
        TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509", "SunJSSE"); 
        tmf.init(ks); 
        TrustManager tms [] = tmf.getTrustManagers(); 
        /*
         * Iterate over the returned trustmanagers, look
         * for an instance of X509TrustManager.  If found,
         * use that as our "default" trust manager.
         */ 
        for (int i = 0; i < tms.length; i++) { 
            if (tms[i] instanceof X509TrustManager) { 
                sunJSSEX509TrustManager = (X509TrustManager) tms[i]; 
                return; 
            } 
        } 
        /*
         * Find some other way to initialize, or else we have to fail the
         * constructor.
         */ 
        throw new Exception("Couldn't initialize"); 
    } 
    /*
     * Delegate to the default trust manager.
     */ 
    public void checkClientTrusted(X509Certificate[] chain, String authType) 
                throws CertificateException { 
        try { 
            sunJSSEX509TrustManager.checkClientTrusted(chain, authType); 
        } catch (CertificateException excep) { 
            // do any special handling here, or rethrow exception. 
        } 
    } 
    /*
     * Delegate to the default trust manager.
     */ 
    public void checkServerTrusted(X509Certificate[] chain, String authType) 
                throws CertificateException { 
        try { 
            sunJSSEX509TrustManager.checkServerTrusted(chain, authType); 
        } catch (CertificateException excep) { 
            /*
             * Possibly pop up a dialog box asking whether to trust the
             * cert chain.
             */ 
        } 
    } 
    /*
     * Merely pass this through.
     */ 
    public X509Certificate[] getAcceptedIssuers() { 
        return sunJSSEX509TrustManager.getAcceptedIssuers(); 
    } 
}
